Search BP-Documents

Hi, I’m making a BP website for internal work. And BP-Documents seems to be an excellent tool. However, it seems difficult to manage a large volume of files, principaly because it does not allows to search by more than one category (or tags). For that reason, I’m thinking in use the WP media library. Is there a way to use links in BP documents, in order to do not duplicate files in the site? Thank you very much!
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